Ignition system for internal combustion engines

ABSTRACT

An ignition system for internal combustion engines additionally including a magnetic pulse device connected in the circuitry so as to provide current in the high voltage flowing to the sparkplugs during the time the circuit is closed between the distributor arm and distributor contact from a period before the opening of the breaker points. The circuitry includes a conventional ignition system with the addition of a magnetic pulse device and a double throw selector switch and ballast resistor.

United States Patent 1 Ortiz [451 Nov. 20, 1973 IGNITION SYSTEM FORINTERNAL COMBUSTION ENGINES [76] Inventor: Francisco Espriu Ortiz,Tuxpan No.

10 2 Peso, Mexico City, Mexico [22] Filed: Feb. 17, 1971 [21] Appl. No.:116,174

[30] Foreign Application Priority Data Apr. 7, 1970 Mexico 1 18505 [52]US. Cl 123/148 DS, 123/179 BG [51] Int. Cl. F02p l/00 [58] Field ofSearch 123/148 R, 148 DS [56] References Cited UNITED STATES PATENTSRees 123/148 DS 2,152,650 4/1939 Kilbom 123/148 DS 2,412,540 12/1946Sellaro..... 123/148 DS 2,784,244 3/1957 Hines 123/148 DS PrimaryExaminer-Laurence M. Goodridge Anorneyl(ar1 W. Flocks [5 7 ABSTRACT Anignition system for internal combustion engines additionally including amagnetic pulse device connected in the circuitry so as to providecurrent in the high voltage flowing to the sparkplugs during the timethe circuit is closed between the distributor arm and distributorcontact from a period before the opening of the breaker points. Thecircuitry includes a conventional ignition system with the addition of amagnetic pulse device and a double throw selector switch and ballastresistor.

3 Claims, 2 Drawing Figures IGNITION SYSTEM FOR INTERNAL COMBUSTIONENGINES BACKGROUND OF THE INVENTION The present invention relates to anignition system for internal combustion engines and more particularly toa means to increase the'duration of 'the spark to the sparkplugs for aperiod of time before the opening of the breaker points. 7

With th ordinary ignition system consisting of a battery, contactbreaker and condenser, high voltage induction coil, distributor andsparkplugs, the spark is supplied to the sparkplug for only a briefperiod of time when the breaker points are open. This is sufficient onlyto initiate the burning of the fuel and not to continue to influence theignition of the fuel until all of the ignition system, are also known inthe prior art such as that found in my US. Pat. No. 3,028,524 issuedApr.3, 1962 which discloses a system which operates with a self-inductioncoil of the vibrator type.

Also dual ignition systems are well known in'the prior art and suchsystems operate so that one system is substantially no more than a sparefor the other.

With the present invention the combustion and maintenance of thesparkplugs in a clean condition for optimal ignition is improved overthat of prior art systems.

An advantage of the present invention resides in the use of conventionalparts in the ignition system including the conventional coil, breakersystem vor interrupter, distributor, etc. with only the addition of apulse device, selector switch, and ballast resistor into the system.

SUMMARY OF THE INVENTION Basically the present invention deals with aconventional ignition system having an electrical power source, ignitionswitch, ignition coil, distributor, interrupter or breaker electricallyconnected through the distributor contacts to the sparkplugs andadditionally a magnetic pulse device and selector switch to allow asustained spark to be delivered to said sparkplugs.

BRIEF DESCRIPTION OF THE DRAWINGS Other advantages of the presentinvention will become apparent to those skilled in the art, from thefollowing description when read in conjunction with the accompanyingdrawings wherein:

FIG. 1 is a diagrammatic schematic view of the components of theignition system of the present invention with some of the parts enlargedout of proportion for clarity of illustration;

FIG. 2 is a circuit diagram of the system illustrated in FIG. 1.

DESCRIPTION OF THE PREFERRED EMBODIMENT The present invention isdescribed with respect to application to an automobile but it should berealized that it is equally applicable to internal combustion engines ofother vehicles or stationary internal combustion e'ngines. Referring tothe figures in the drawing there is shown a battery 1 connected throughignition switch 2 and ballast resistor 9 to the contacts 17 of magneticpulse device 8. In pulse device 8 the capacitor 18 is connected acrosscontacts 17. Coil 19 of magnetic pulse device "8 is connected in serieswith contacts 17 which are connected in series with selector switch 7.

Primary coil of ignition coil 4 is also connected in series withcontacts 17 through terminal 20 but is connected in parallel with coill9 and selector switch 7.

Connection 21 which is located at the opposite end of primary coil 15from terminal 20 has connections from the primary coil 15 to selectorswitch 7 and to breaker points 12 and capacitor 11 in parallel withbreaker points '12."

From this same connection 21 there is connected secondary coil 16 ofignition coil 4 which in turn is connected through line 22 todistributor arm 13 which is rotated on the same shaftas engine-drivencam 10 used for opening and closing breaker points 12. Distributor arm13 located in distributor 5 rotates for connection with distributorcontacts leading to each of the sparkplugs 6. Each of sparkplugs 6 isconnected to ground and thereby to the negative terminal of battery 1.In a like manner one side of breaker points 12 and capacitor II are alsoconnected to ground.

In the operation of the ignition system shown in FIGS. 1 and 2 with theignition switch 2 in a closed position and selector switch 7 open, thecircuit through the parallel branch composed of coil 19 of magneticpulse device 8 and switch 7 is open and therefore the coil 19 isdeactivated. Normally closed contacts 17 complete the circuit throughprimary coil 15 to interruptor 3 and through secondary coil 16 todistributor 5 and sparkplugs 6. Therefore with selector switch 7 in anopen position shown by dotted outline 7A, the system operates in themanner of a conventional ignition system.

Upon the closing of selector switch 7 by moving it into position 7B, thefull ignition system of the present invention is brought into operation.As before, breaker points 12 are operated by engine-driven cam 10 inconjunction with distributor arm 13 but in addition, upon the closing ofselector switch 7, the circuit through coil 19 is completed. Upon theclosing of breaker points 12 a circuit is completed from battery 1through ignition switch 2, ballast resistor 9, normally closed contacts17 of magnetic pulse device 8, coil 19, switch 7, and breaker points 12to ground and to the negative terminal of battery 1. By the activationof coil 19 the associated contacts 17 are opened thereby breaking thecircuit momentarily and causing the contacts 17 to return to theirnormally closed position thus setting up a pulsing or vibrating contact17. Thus the pulse device 8 sets up current through primary coil 15 ofconstant inengine-driven cam and therefore the circuit betweendistributor arm 13 and each of the distributor contacts is closed at atime shortly before the opening of breaker points 12. Immediately uponthe closing of the circuit between distributor arm 13 and its contact,the spark which has been generated by means of magnetic pulse device 8by the current passing through coils 15 and 16 is carried to sparkplug 6connected to that one of the distributor contacts. The spark issustained in the sparkplug 6 until the current generated by the openingof breaker points 12 has been dissipated. In order to gain fulladvantage of the sustained spark an adjustment in the position ofdistributor arm 13 could be made so as to advance it to a position totake full ad vantage of the current or spark generated approximately 8before the opening of breaker points 12.

Thus it can be seen that only a simple selector switch 7 is needed toactuate the conventional system or the full ignition system of thepresent invention. This simplification of elements implies advantagesboth in costs and in operation safety and effieiency. Also the voltagereceived by the sparkplugs in the full ignition system remains stabledue to the regular frequency of the pulse device with the full power ofthe coil being efficient at any engine speed along with a longerduration of current.

What is claimed is:

1. An ignition system for an internal combustion engine comprising anelectrical power source,

an ignition switch connected to said power source,

a magnetic pulse device having a coil and normally closed contactsmagnetically attracted by said coil,

said magnetic device contacts connected in series -with said ignitionswitch and said magnetic pulse device coil,

an ignition coil having primary and secondary coils with said primarycoil connected in series with said magnetic pulse device contacts,

a distributor having cam operated breaker points, a

distributor arm and contacts,

a-sparkplug connected to each of said distributor contacts,

said distributor arm. operably closing the circuit to each of saiddistributor contacts in turn and connected to said secondary coil,

' said breaker points connected in series with said primary coil;

and a selector switch connected in series with said magnetic pulsedevice coil with said series connected selector switch and magneticpulse device coil connected in parallel with said primary coil.

2. The ignition system of claim 1, further characterized by a ballastresistor connected in series with said magnetic pulse device contacts.

3. The ignition system of claim 1, further characterized by capacitors,in parallel with said magnetic pulse device contacts and with saidbreaker points.

1. An ignition system for an internal combustion engine comprising anelectrical power source, an ignition switch connected to said powersource, a magnetic pulse device having a coil and normally closedcontacts magnetically attracted by said coil, said magnetic devicecontacts connected in series with said ignition switch and said magneticpulse device coil, an ignition coil having primary and secondary coilswith said primary coil connected in series with said magnetic pulsedevice contacts, a distributor having cam operated breaker points, adistributor arm and contacts, a sparkplug connected to each of saiddistributor contacts, said distributor arm operably closing the circuitto each of said distributor contacts in turn and connected to saidsecondary coil, said breaker points connected in series with saidprimary coil, and a selector switch connected in series with saidmagnetic pulse device coil with said series connected selector switchand magnetic pulse device coil connected in parallel with said primarycoil.
 2. The ignition system of claim 1, further characterized by aballast resistor connected in series with said magnetic pulse devicecontacts.
 3. The ignition system of claim 1, further characterized bycapacitors, in parallel with said magnetic pulse device contacts andwith said breaker points.